Most existing Firefox 2 users will be alerted to the new version by the software update feature built in to the browser. For the first time, this upgrade will also be offered to users of Firefox 1.5.0.12 via the 1.5 software update system. This is intended to get all Firefox users on the latest version so that the Mozilla Corporation can end support for Firefox 1.5.

The new fixed-width tabs are murder, I do a lot of online research and having half my tabs hidden off screen and having to scroll around to hunt for them is driving me insane, is there any way of getting back the old tab system without giving up on v2 altogether?